package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.SetmealDTO;
import com.sky.dto.SetmealPageQueryDTO;
import com.sky.entity.Dish;
import com.sky.entity.Setmeal;
import com.sky.entity.SetmealDish;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.exception.SetmealEnableFailedException;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealDishMapper;
import com.sky.mapper.SetmealMapper;
import com.sky.result.PageResult;
import com.sky.service.SetmealService;
import com.sky.vo.DishItemVO;
import com.sky.vo.SetmealVO;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.time.LocalDateTime;
import java.util.ArrayList;
import java.util.List;

@Service
@Slf4j
public class SetmealServiceImpl implements SetmealService {

    @Autowired
    private SetmealMapper setmealMapper;

    @Autowired
    private SetmealDishMapper setmealDishMapper;

    @Autowired
    private DishMapper dishMapper;

    @Override
    @Transactional
    public void save(SetmealDTO setmealDTO) {

        Setmeal setmeal = new Setmeal();
        BeanUtils.copyProperties(setmealDTO, setmeal);
        setmeal.setStatus(StatusConstant.DISABLE);


        setmealMapper.insert(setmeal);

        Long id = setmeal.getId();

        List<SetmealDish> dishList = setmealDTO.getSetmealDishes();
        for (SetmealDish setmealDish : dishList) {
            setmealDish.setSetmealId(id);
        }
        setmealDishMapper.insert(dishList);

    }

    @Override
    public PageResult page(SetmealPageQueryDTO setmealPageQueryDTO) {
        PageHelper.startPage(setmealPageQueryDTO.getPage(), setmealPageQueryDTO.getPageSize());
        Page<SetmealVO> pageResult = setmealMapper.pageQuery(setmealPageQueryDTO);

        Long total = pageResult.getTotal();
        List<SetmealVO> setmealList = pageResult.getResult();

        return new PageResult(total, setmealList);
    }

    @Override
    @Transactional
    public void delete(List<Long> ids) {

        for (Long id : ids) {
            Setmeal setmeal = setmealMapper.selectByID(id);
            if (setmeal.getStatus() == StatusConstant.ENABLE) {
                log.error("当前套餐正在销售，不得删除");
                throw new DeletionNotAllowedException(MessageConstant.SETMEAL_ON_SALE);
            }
        }

        setmealDishMapper.deleteByDishID(ids);
        setmealMapper.deleteByID(ids);

    }

    @Override
    @Transactional
    public SetmealVO getByID(Long id) {

        //获取套餐，套餐菜品和分类名称
        Setmeal setmeal = setmealMapper.selectByID(id);
        List<SetmealDish> setmealDish = setmealDishMapper.selectByDishID(id);
        String categoryName = setmealMapper.getCategoryNameByID(id);

        SetmealVO setmealVO = new SetmealVO();
        BeanUtils.copyProperties(setmeal, setmealVO);

        setmealVO.setCategoryName(categoryName);
        setmealVO.setSetmealDishes(setmealDish);

        return setmealVO;

    }

    @Override
    @Transactional
    public void update(SetmealDTO setmealDTO) {
        Setmeal setmeal = new Setmeal();
        BeanUtils.copyProperties(setmealDTO, setmeal);
        log.info("套餐id是:{}",setmealDTO.getId());
        setmealMapper.update(setmeal);

        List<Long> ids = new ArrayList<>();
        Long id=setmealDTO.getId();
        log.info("套餐id是:{}",id);
        ids.add(id);
        setmealDishMapper.deleteByDishID(ids);

        List<SetmealDish> setmealDishList = setmealDTO.getSetmealDishes();
        for (SetmealDish setmealDish : setmealDishList) {
            setmealDish.setSetmealId(id);
        }
        setmealDishMapper.insert(setmealDishList);
    }

    @Override
    public void startOrStop(Integer status, Long id){
        if(status == StatusConstant.ENABLE){
            List<Dish> dishList = dishMapper.getBySetmealId(id);
            if(dishList != null && dishList.size() > 0){
                dishList.forEach(dish -> {
                    if(StatusConstant.DISABLE == dish.getStatus()){
                        throw new SetmealEnableFailedException(MessageConstant.SETMEAL_ENABLE_FAILED);
                    }
                });
            }
        }

        Setmeal setmeal = Setmeal.builder()
                .id(id)
                .status(status)
                .build();
        setmealMapper.update(setmeal);
    }

    /**
     * 条件查询
     * @param setmeal
     * @return
     */
    public List<Setmeal> list(Setmeal setmeal) {
        List<Setmeal> list = setmealMapper.list(setmeal);
        return list;
    }

    /**
     * 根据id查询菜品选项
     * @param id
     * @return
     */
    public List<DishItemVO> getDishItemById(Long id) {
        return setmealMapper.getDishItemBySetmealId(id);
    }

}
